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SN74LVC16245A_09

更新时间： 2024-11-24 09:13:07
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德州仪器 - TI 总线收发器输出元件
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16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

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SN74LVC16245A_09 数据手册

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SN74LVC16245A  
16-BIT BUS TRANSCEIVER  
WITH 3-STATE OUTPUTS  
www.ti.com  
SCES062O–DECEMBER 1995–REVISED JANUARY 2008  
1
FEATURES  
DGG, DGV, OR DL PACKAGE  
(TOP VIEW)  
2
•
Member of the Texas Instruments Widebus™  
Family  
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48  
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1DIR  
1B1  
1B2  
GND  
1B3  
1B4  
VCC  
1B5  
1B6  
GND  
1B7  
1B8  
2B1  
2B2  
GND  
2B3  
2B4  
VCC  
2B5  
2B6  
GND  
2B7  
2B8  
2DIR  
1OE  
1A1  
1A2  
GND  
1A3  
1A4  
VCC  
1A5  
1A6  
GND  
1A7  
1A8  
2A1  
2A2  
GND  
2A3  
2A4  
VCC  
2A5  
2A6  
GND  
2A7  
2A8  
2OE  
•
•
•
•
Operates From 1.65 V to 3.6 V  
Inputs Accept Voltages to 5.5 V  
Max tpd of 4 ns at 3.3 V  
2
3
4
Typical VOLP (Output Ground Bounce)  
<0.8 V at VCC = 3.3 V, TA = 25°C  
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6
•
•
Typical VOHV (Output VOH Undershoot)  
>2 V at VCC = 3.3 V, TA = 25°C  
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Supports Mixed-Mode Signal Operation on All  
Ports (5-V Input/Output Voltage With  
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3.3-V VCC  
)
•
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Ioff Supports Partial-Power-Down Mode  
Operation  
Latch-Up Performance Exceeds 250 mA Per  
JESD 17  
ESD Protection Exceeds JESD 22  
–
–
–
2000-V Human-Body Model (A114-A)  
200-V Machine Model (A115-A)  
1000-V Charged-Device Model (C101)  
DESCRIPTION/ORDERING INFORMATION  
This 16-bit (dual-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCC operation.  
The SN74LVC16245A is designed for asynchronous communication between data buses. The control-function  
implementation minimizes external timing requirements.  
This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the  
A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR)  
input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.  
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in  
a mixed 3.3-V/5-V system environment.  
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,  
preventing damaging current backflow through the device when it is powered down.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
Widebus is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 1995–2008, Texas Instruments Incorporated  
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